{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["DNA", "cell type", "cell line", "RNA", "protein"], "input": "In this study multiple NF-kappa B related polypeptides ranging from 85 to 45 kDa were examined for their capacity to interact with the PRDII regulatory element of interferon beta and were shown to possess distinct intrinsic DNA binding affinities for this NF-kappa B site and form multiple DNA binding homo- and hetero dimer complexes in co-renaturation experiments."}
{"DNA": ["PRDII regulatory element", "interferon beta", "NF-kappa B site"], "cell type": [], "cell line": [], "RNA": [], "protein": ["NF-kappa B related polypeptides", "NF-kappa B"]}